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We're getting these messages in our log. What does it mean and how can we fix it?

Steve G wrote: Thu May 15, 2025 5:07 pm

May 15 09:07:29 bwmgr kernel: Queue Full: len:3000 max:3000

We're getting these messages in our log. What does it mean and how can we fix it?

You need to increase your max_qlen setting:
The default is 3000. This is set when you create the rule, so you need to set this in your bootup sysctl config:

edit /etc/sysctl.conf:
And then reboot. If you’re just having a problem with 1 rule you could just do
and then re-create the rule

Note that this will be dynamic shortly. The queue depth should be calculated based on the allowed bandwidth. In fact I’m going to add that as a priority task.

TCP traffic gets window shaped so if you’re blowing. your queue it means you have a lot of icmp or udp traffic and you might want to see what they’re doing if this is an individual customer rule.

As of 8.071 you can override the default max queue length (ie the number of packets that can be delayed) in both profiles and individual rules

The max_qlen setting for each rule is now dynamic based on the bandwidth setting for the rule. It will not exceed the sysctl setting for bwmgr.max_qlen. You can override this in profiles or individual rules